Watts AERCO Benchmark BMK5000 User Manual

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
OMM-0145_D • GF-218 • 11/2/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 60 of 213
NATURAL GAS Manual Combustion Calibration Instructions
22. On Benchmark 3000 - 6000 units only, record the manifold (downstream) gas pressure at
100%. This value will be used in Section 5.2.2: Low Pressure Gas Test, and Section 5.3.2:
High Pressure Gas Test.
23. Once the O
2
level is within the specified range at 100%:
• Enter the Flame Strength, NOx and CO readings from the Combustion Analyzer and
multi-meter in the Manual Combustion Calibration screen’s Reading column.
• Enter the same values, plus the O
2
value, on the Combustion Calibration Data Sheet
provided with the unit.
24. Lower the Valve Position to the next calibration point using the  (Left) arrow key (if using
Method 1 in step 11) or the Fine Valve Position – (Minus) key (if using Method 2).
• BMK750 & 1000: 80%
• BMK1500 – 6000: 70%
25. Repeat step 17, 18 and 21 at that valve position and the rest of the valve positions in Table
below corresponding to your model. The O
2
, NOx and CO should stay within the ranges
shown in these tables.
TABLE 4-3a: NATURAL GAS BMK Final Valve Positions: BMK750/1000
Valve Position
Standard NOx
Ultra-Low NOx
CO
O
2
%
NOx
O
2
%
NOx
80%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
60%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<100 ppm
45%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
30%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
18%
5.5% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
TABLE 4-3b: NATURAL GAS Final Valve Positions: BMK1500/2000
Valve Position
Standard NOx
Ultra-Low NOx
CO
1500
2000
O
2
%
NOx
O
2
%
NOx
70%
6.0% ± 0.2%
≤20 ppm
5.5% ± 1.0%
≤9 ppm
<100 ppm
50%
6.3% ± 0.2%
≤20 ppm
5.8% ± 1.0%
≤9 ppm
<100 ppm
40%
7.0% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
30%
7.0% ± 0.2%
≤20 ppm
6.0% ± 1.0%
≤9 ppm
<50 ppm
16%
18%
7.0% ± 0.2%
≤20 ppm
8.0% ± 1.0%
≤9 ppm
<50 ppm

Watts AERCO Benchmark BMK5000 Specifications

General

Brand	Watts
Model	AERCO Benchmark BMK5000
Category	Boiler
Language	English